Lighting fixture



1964 N. R. SCHWARTZ LIGHTING FIXTURE 2 Sheets-Sheet 1 Filed June 7, 1962INVENTOR. A A TH/i/V A ft/#444272 Jan. 28, 1964 N. R. SCHWARTZ 3,119,567

LIGHTING FIXTURE Filed June 7, 1962 2 Sheets-Sheet 2 INVENTOR. AMn-mA/fi, Jam/4e rz United States Patent O 3,119,567 LIGHTING FHXTURENathan R. fiehwartz, Yonkers, N.Y., assignor to Swivelrer Company, line,New York, N.Y., a corporation of New York Filed dune 7, 1962, Ser. No.280,808 4 Claims. (Cl. 240-47) This invention relates to an electricallighting fixture and more particularly to such a fixture having areflector which remains cool to the touch and which has enclosed thereinand rigidly secured thereto a swivel assembly or unit adapted to varythe angular position of the reflector.

it is known to design metallic reflectors of lighting fixtures in such amanner that they may be comfortably handled, even when used inassociation with a 100 or 150 watt incandescent bulb. One such reflectoruseful for this purpose is disclosed in United States Patent No.2,799,773.

When the reflector is embodied in a lighting fixture incorporating aswivel unit adapted to provide an angular or rotative adjustmentthereof, and manual handling of the reflector is thus inevitable, it isparticularly important to provide a reflector which remains cool to thetouch, despite prolonged usage.

It is among the objects of the present invention to provide such anelectrical lighting fixture having a reflector which [remains cool tothe touch with prolonged usage and which has enclosed therein a swivelunit, which fixture is simple and economical to manufacture and which,nevertheless, is ruggedly constructed.

Other objects and advantages of the present invention will be apparentfrom the following detailed description taken in connection with theaccompanying drawings in which:

'FIGURE 1 is a vertical section through a lighting fixture embodying thepresent invention;

FIGURE 2 is a vertical section similar to FIGURE 1, taken along line 22'in FIGURE 1;

FIGURE 3 is an exterior elevation of the lighting fixture of FIGURE 1;and

FIGURE 4 is a cut away perspective view, showing the structure by whichthe intermediate shade of the reflector is secured to the swivelassembly.

Generally, the invention provides, in an electrical lighting fixturehaving a reflector including three concentric tubular shades,respectively, an inner shade, an intermediate shade of greater heightand diameter than the inner shade and an outer shade of yet greaterheight and diameter than the intermediate shade, a swivel assemblymounted within the reflector rigidly secured by a mounting flange to theouter shade and secured to the intermediate shade and the mountingflange by at least two mounting screws.

The swivel assembly includes a top shell secured to the mounting flange,which shell is provided with a number of notches which are engaged bylugs provided in a roof portion at one end of the inter-mediate shade toprevent the intermediate shade from moving with respect to the top shellof the swivel assembly, and thereby insure a rigid stable assemblage.

According to a turther feature of the invention, a switch box isfastened between the intermediate and outer shades of the reflector,which box provides a cavity including a splice compartment in which theswitch leads to the light contained :Within the fixture may beconveniently spliced. A door for the switch box is pivotally mounted onthe outer shade and a switch is received within the switch box andsecured therein by an engaging lock nut which locks the door in closedrelation flush with the surface of the outer shade when the switch boxis closed;

3,119,567; Patented Jan. 28, 1964 the switch is readily removed from theswitch box by removing the lock nut.

Referring now to the drawings in detail, the embodiment of the lightingfixture illustrated includes a reflector indicated generally at 11 inFIGURE 3, comprising a conical outer tubular shade 12, a shorterintermediate tubular shade 13 and a still shorter inner tubular shade14. The inner shade 14 is secured to intermediate shade 13 by a numberof non-conductive spacers 15, three of which are shown in FIGURES l and2 spaced apart from one another, and through each of which a nail 16 isdriven. The intermediate shade 13 is spaced from the outer shade 12 bynon-conductive spacer members '17 which maintain the intermediate shade13 and the inner shade .14 spaced from and properly aligned with theouter shade 12,. The spacers reinforce the fixture structure,maintaining the shades in concentric relation while at the same timeproviding even dissipation from the fixture of heat.

The outer shade 12 is provided with a number of tandem openingsconsisting of upper cooling slots 18 and lower cooling slots 19 whichpermit the passage of air, heated by a lamp 21 within the fixture, tothe ambient atmosphere. The inner shade 14- is open at 22 at its upperend adjacent the neck of lamp 21; shade 14- is supported solely by thespacers 15 in order to minimize the conduction of heat from lamp 21thereto. The intermediate shade 13 is provided with a number of ventopenings 23 which allow passage of the heated air from such space intothe zone separating the intermediate shade 13 and the outer shade 12. Apassageway for escape of the heated air to the ambient atmosphere isthereby assured.

As shown in the drawings the inner shade 1 4 is recessed within theintermediate shade .13 and the latter is recessed within the outer shade12 in order to minimize the possibility of accidentally touching theshades which become heated after prolonged operation of lamp 21.

The swivel assembly, indicated generally in FIGURES 1 and 4 at 24,includes a top shell 25 carried by a supporting arm 20 and provided witha pair of slots or notches 26, one of which is shown in the drawing,which accept tabs 27 formed integrally with a mounting flange member 28for the swivel assembly, thereby firmly securing the top shell to themember 28. The mounting flange member includes an upper cup shapedportion 29 in which the top shell '25 is received and a depending flangeportion 30 which is suitably fastened, as by a rivet 31, to the outershade 12.

The top shell 25 includes within it an insulated washer 32 which isprovided with two tapped holes 33 for receiving mounting screws 34therein. The mounting screws 34 are received in a lamp socket 35 inwhich lamp 21 is mounted, and secure the lamp socket to the top shell25. The mounting screws 34 additionally pass through apertures in an endor root portion 36 of the intermediate shade 13, thereby securing theintermediate shade relative to the top shell 25 and the socket 35. Thisassemblage, in conjunction with the spacer members 15 and 17, provides asimple yet rugged and stable construction.

In order to prevent the intermediate shade 13 from turning in top shell25, a pair of positioning lugs 37 is provided in the roof portion 36 ofthe intermediate shade; the lugs engage with and seat in a correspondingpair of slots 38 in the top shell 25 (one of each pair of lugs 37 andslots 3-8 is shown in FIGURE 4) and thus prevent rotatory movement ofthe intermediate shade relative to the top shell.

The lamp socket 35 has attached to it a pair of wires 39 and 40 whichpass through an aperture 41 in the intermediate shade. A strain reliefbushing 42, which is shown only in FIGURE 2 for purposes of clarity, is

mounted in aperture 41 to prevent fraying of the wires 39 and 40.

A switch box 43 is mounted between the intermediate shade 13 and theouter shade 12 aligned with an aperture in the peripheral surface of theouter shade. The switch box 43 provides a cavity in which a switch 44 ispositioned and further provides a splice compartment for the splicing ofswitch leads to wire 39 leading from the lamp socket, by means of wirenuts 45. Apertures are additionally provided in the intermediate shade13 and the switch box 43 to permit the passage of the wirestherethrough. A hinged switch door 46, indicated in dotted line in itsopen position (FIGURE 2), is suitably fastened to the outer shade 12, asby riveting. The switch 44 includes a threaded nipple 47 which extendsthrough the opening in the outer shade 12 in abutting relation to adepressed portion 48 of the surface of the outer shade. When the hingedswitch door 46 is closed, a fastening member such as knurled nut 49 istightened on the threaded nipple 47, fastening the door 46, thedepressed portion 43 and the switch 44 in secure engagement, with thedoor positioned in closed relation, flush with the surface of the outershade 12.

While the lighting fixture of this invention has been illustrated inconnection with a single embodiment, it will be understood that variouschanges may be made in the disclosed embodiment without departing fromthe scope of the invention. Thus the supporting arm 20, on which thelighting fixture is swivelly mounted, may be connected to any desiredportion of the top shell of the swivel assembly, thus pivoting thefixture at its side rather than its end, for example, as shown in dottedline at 20 in FIGURE 3.

Since other changes may be made in the lighting fixture of the presentinvention without departing from the scope of the invention, it will beunderstood that all matter contained in the above description and shownin the accompanying drawings shall be interpreted as illustrative andnot in a limiting sense.

The embodiments of the invention in which an exclusive privilege orproperty is claimed are defined as follows:

1. In an electrical lighting fixture having a reflector comprising threeconcentric shades, respectively, an inner tubular shade, an intermediatetubular shade of greater height and diameter than said inner shade, saidintermediate shade terminating in an apertured roof portion at one endthereof, and an outer tubular shade of greater height and diameter thansaid intermediate shade and including spacer means securing at least theinner and intermediate shades in fixed spaced relation, the improvementcomprising:

(a) a mounting flange rigidly secured to said outer shade; and

(b) an assembly mounted within the reflector including 1) a lamp sockethaving an apertured base,

(2) a top shell secured to said mounting flange,

and

(3) a plurality of mounting screws passing through the apertured base ofthe lamp socket and the apertured roof of said intermediate shade andbeing secured to the top shell to maintain the lamp socket, theintermediate shade and the mounting flange in fixed spaced relation.

2. The electrical lighting fixture defined in claim 1, in which saidouter shade has a cut-out defining an opening through which \a switch ismounted, the outer shade further including an extension extending intosaid opening which extension is depressed relative to the surface ofsaid outer shade; and including a switch assembly comprising:

(a) a switch mounted between said intermediate and outer shades, saidswitch having a threaded nipple abutting the extension of the outershade and extending outwardly of the fixture;

(b) an apertured door pivotally mounted on said outer shade, said doorcovering the opening in the outer shade with the threaded nipple of saidswitch passing through the door aperture when the door is positioned inits closed position, and

(c) a fastening nut threadedly engaging said nipple and securing theswitch and the extension of the outer shade together with the pivotallymounted door in closed position flush with the surface of said outershade.

3. The electrical lighting fixture defined in claim 1, in which the topshell of said assembly is provided with a plurality of notches, and inwhich the roof portion of said intermediate shade includes a pluralityof lugs seated in said notches and preventing said intermediate shadefrom moving with respect to said top shell.

4. In an electrical lighting fixture having a reflector comprising threeconcentric shades, respectively, an inner tubular shade; an intermediatetubular shade of greater height and diameter than said inner shade, saidintermediate shade having a shoulder portion near one end thereofterminating in an apertured roof portion at said end having a pluralityof positioning lugs thereon; and an outer conical shade of greaterheight and diameter than said intermediate shade, said outer shadehaving a cut-out defining an opening through which a switch may bemounted and including an extension extending into said opening, whichextension is depressed relative to the surface of said outer shade; andincluding spacers securing the inner, intermediate and outer shades infixed spaced relation;

(a) a mounting flange rigidly secured to said outer shade;

(b) an assembly mounted within the reflector in cluding:

(l) a top shell secured to the mounting flange and provided with aplurality of notches engaged by the positioning lugs on the aperturedroof portion of said intermediate shade to thereby prevent movement ofthe intermediate shade with respect to the top shell,

(2) a lamp socket having an apertured base, and

(3) a plurality of mounting screws passing through the apertured base ofthe lamp socket and the apertured roof of said intermediate shade andbeing secured to said top shell, said mounting screws maintaining theapertured base of the lamp socket in abutment with the shoulder portionof said intermediate shade and securing the roof portion of saidintermediate shade and the mounting flange in fixed spaced relation; and

(c) a switch assembly mounted on said outer shade,

including (1) a switch mounted between said intermediate and outershades, said switch having a threaded nipple abutting the extension ofthe outer shade and extending outwardly of the fixture,

(2) an apertured door pivotally mounted on said outer shade, said doorcovering the opening in the outer shade with the threaded nipple of saidswitch passing through the door aperture when the door is positioned inits closed position, and

(3) a fastening nut threadedly engaging said nipple and securing thepivotally mounted door, the switch and the extension of the outer shadetogether with the door in closed position flush with the surface of saidouter shade.

References Cited in the file of this patent UNITED STATES PATENTS1,357,295 McNaughton Nov. 2, 1920 1,797,050 Cole Mar. 17, 1931 2,078,137Halvorson Apr. 20, 1937 2,799,773 Schwantz July 16, 1957 2,897,349 CirotJuly 28, 1959

1. IN AN ELECTRICAL LIGHTING FIXTURE HAVING A REFLECTOR COMPRISING THREECONCENTRIC SHADES, RESPECTIVELY, AN INNER TUBULAR SHADE, AN INTERMEDIATETUBULAR SHADE OF GREATER HEIGHT AND DIAMETER THAN SAID INNER SHADE, SAIDINTERMEDIATE SHADE TERMINATING IN AN APERTURED ROOF PORTION AT ONE ENDTHEREOF, AND AN OUTER TUBULAR SHADE OF GREATER HEIGHT AND DIAMETER THANSAID INTERMEDIATE SHADE AND INCLUDING SPACER MEANS SECURING AT LEAST THEINNER AND INTERMEDIATE SHADES IN FIXED SPACED RELATION, THE IMPROVEMENTCOMPRISING: (A) A MOUNTING FLANGE RIGIDLY SECURED TO SAID OUTER SHADE;AND (B) AN ASSEMBLY MOUNTED WITHIN THE REFLECTOR INCLUDING (1) A LAMPSOCKET HAVING AN APERTURED BASE, (2) A TOP SHELL SECURED TO SAIDMOUNTING FLANGE, AND (3) A PLURALITY OF MOUNTING SCREWS PASSING THROUGH